Theoretically, introducing an IB lets two photons with energy lower than the bandgap to excite an electron from the valence band into the conduction band. This enhances the induced photocurrent and thereby effectiveness.[121] And as outlined, there are a number of internal and exterior variables to solar cells them selves, https://messiaho0ded.blogoscience.com/42967529/5-easy-facts-about-3kw-solar-cell-price-described